Since Mitsubishi normal sub cutting edge width is 1,4mm and the sub cutting edges are set parallel to the face of a milling cutter theoretically th

Since Mitsubishi normal sub cutting edge width is 1,4mm and the sub cutting edges are set parallel to the face of a milling cutter theoretically th

Since Mitsubishi normal sub cutting edge width is 1,4mm and the sub cutting edges are set parallel to the face of a milling cutter theoretically the finished surface accuracy should be maintained even if run-out accuracy is low. Actual Problems Cutting edge run-out. Sub cutting edge inclination. Milling cutter body accuracy. Spare parts accuracy. Welding vibration chattering. Countermeasure Wiper Insert Machine a surface that has already been per-machined in order to produce smooth finished surface. Replace one or two normal inserts with wiper inserts. Wiper inserts be set to protrude by 0.03 0.1mm from the standard inserts. 1.Value depends on the cutting edge and insert combination. How to Set a Wiper Insert (a) One Corner Type Replace normal insert. (b) Two Corner Type Replace normal insert. (c) Two Corner Type Use locator for wiper insert. Sub cutting edge length has to be longer than the feed per revolution. Too long sub cutting edge causes chattering. When the cutter diameter is large and feed per revolution is longer than the sub cutting edge of the wiper insert use two or three wiper inserts. When using more than 1 wiper inserts eliminate run-out of wiper inserts. - Use a high hardness grade (high wear resistance) for wiper inserts. Q015 TECHNICAL DATA FINISHED SURFACE Cutting Edge Run-out Accuracy Cutting Edge Run-out and Accuracy in Face Milling Cutting edge run-out accuracy of indexable inserts on the cutter body greatly affects the surface finish and tool life. Improve Finished Surface Roughness fz Feed per Tooth f Feed per Revolution Sub Cutting Edge Run-out and Finished Surface